Pattern-drafting device.



G. H. CARDELL.

PATTERN DRPTING DEVICE.

APPLICATION FILED Nov. so, 1909.'

Patented Feb. 14, 1911.

3, SHEETS-SHEET 1.

G. H. CARDELL.

PATTERN DRAFTING DEVICE.

APPLIGATION FILED NOV. 30, 1909.

Patented Feb. 14, 1911f 3 SHEETS-SHEET 2.

- @nuev/Noz Geo/yef Carnia@ fluor/mug G. H. CARDELL.

PATTERN DRAWING DEVICE,

APPLICATION FILED NOV. 30, 1909.

Patented Feb. 14, v19111.

3 SHEETS-SHEET 3.

ably connected to said body member to per-A points. attachment tor the instrument-f GEORGE H. CARDELL, OF RENO, NEVADA.

PATTERN-DRAWING DEVICE.

aaien.

Specification of Letters Patent.

Application filed November 30, 1 909. Serial No. 530,598.

To all whom/it 'may coaccrn:

Be it known that L GEonGnH. Cannara., a citlzen ot the United States. residing at Reno, in the county of lVashoo and State ot' i Nevada, have invented certain new and useful Improvements in Pattern-Drafting Devices, of which the following is a specification, reference being had therein to the accompanying drawin0.

This invent-ion relates to draftingT instruiii'e1ItS, and the principal objectl 'of the same is to provide an .instrument for drawing patterns for c i-'lindrical sheety metal articles, such .as cones, ellipses, frustums, pipe elbows, and the like.

1 In carrying out the objects of the invention generally stated above., it is contemplated providing av frame composed ot' a body member and end members, the end members ljieing of different sizes and adjustmitvarious relative adjustments, -said end members being' proizidtal with adjustable making. means for imparting the end lines ot a patte-rn to the usual drawing paper so that said ends mai7 the usual rulingr instruments.

the essential features thereof arenecessaril) 'suseeptibleof changes in details and struetural arrangements, certain preterred and simple emlualnuente of which are shown in i the accompanying drawings, wherein Figure l is a bottom plan view of the improved instrument'. .Figi-2 is a view in Q be. readily connected by instrument to bo described, are preferably of sheet metal, and one end of said body may be redueed and extended to form a.- resilient Socket 3 into which one end ot au upturned 60 arm -l is snugly. but removably fitted. The oth'e end of said arm is provided with a sleevel 5 for the reception of a needle point.

G that .may be used as-a pirot upon which the bod).y l`ma v be swung. -Said body has 65 its longitudinal edges provided :with graduations to designate 'inches and fractions thereof. i

, An end member 7 haring graduations on itslongitudinal edel-es and a central longitu- 7o dinalslot S is adziustal'iliT held in engagement with one end portion of the bodyv mem-' ler l bythe bolt E.) and thumb screw .lthsaid bolt also passing through a prot actor plate '11, the ends ot vwhich are clamped to mem- 7'5 b'er T b v the bolla JQ and thumb nuts, 13.'

)no end ot said nuanber is provided with an outstanding sleeve 1J; which is prete abliy formed of two sections of resilient material` the sections thereojl beiuffy held in adjustable ao clampingv relation b v. the adjusting screw l5. A sleeve lo is adjustably elaniped to the.

member 'T adjacent its other end by means It will be understood, ot course,-'that in the practical application of thev nrvention.

Fig. 5 is a view in' side elevation ot the 'j structure shown. in Vig". i. imilar to Fig'. n ie] it Yreversed Fig'. tl is a view $3. but Showing' lthe instruand equipped with needle Fig'. 7 is a detail viewof an ellipse tragmenta'ijfv View, partlyy iu section. showing theA construction of the.niarkingv wires lof the instrument... Fig. t) is a perspective riew of the instrumentv showingy the same in use fnr/:iying'out a pattern.

Referring tosaid drawingslw numerals. l designates the flat elongatedbody member of the instrun'ient that is provided `with a central longitudinal Slot 2. Said bod)r ot the plates lT---lS and boltV 19 and thumb l screw 20. Said' sleeves 14- and 1G project at 85 right angles to tlie nnanlfier T, the sleeve 14 5 being' stationary. and the sleeve lll bein;r adjustable and provided with a clampingT 'rew 2l. marking wire 22. formed ot spring" metal having' an inelosing jaeiiet 22a 90 ot' rubber or the like has one cndclamped within sectional Sleeve 14, its other end being' bowed over meinber- T and passed through the slot Fi thereof and adjustabli clamped within sleeve "lo hv the screw 9i. 95 Said lnarhinni wire is etpnpped with I:rradrmtionsy representing' inches and fractions thereot. .inother end member Tt. that isV a ber i is .also equipped with a stationary 105 sert ional sleeve 2S at'one en d. and 4aii-adustlable sleeve 99 adiacent- 'its other. end. both 'sleeves being identical with the Sleeves supporting a bowed'wire 30 thatis also 1.170

similar tothe wire ofsaid end member 7.,

member, as well as the other paris otite. ln Fig. 9 the instrument haslbeen shown and the wires 22-30 are adjusted in theirl CII paper 32'.

sleeves to the diameterbf the article. Said wires are then inked and the end members .7--78L are held `against one edge of the board 31 with the wires resting on the drawing Theinstrument is then rocked on the paper 32, causing the wires to mark thel ends ofthe pattern as. indicated on the paper, after which the ends ofthe lines marked on the paper are connected as indicated by broken lines.

If a cone is to be drawn, one of the end members is removed and' the other adjusted -to the' length of the cone. In this use of the instrument the needle pointe of the member 1 is used to-l indicate the apex of the cone on. the dra-wmgpaper, `and the marking wire indicates the base.

'Io lay ofi' a square, or straight edge, the sleeves of members 7 and 7l may be equipped with needle. points 33 instead of the markin `wires, as is suggestedr in Fig. 6. As wi l be 'obvious,.the use of needle points in laying otf squares andveones, causes-said needle points to perforate the paper.

As is indicated by dotted lines in Fig. 2, and shown in detail in Fig. 7, themeans for drawing ellipse's 'comprises a rod 34 for, each markingwire, said rod having a. sleeve' 35 at one end' for enga-ging the marking wire and its. other. end threaded as indicated at 36 foryadjustable engagement with vthe thumb nut that holds the end members in engagement with the bodymember 1. In drawing ellrpses, the long and short d1- ameter belng known and the end members therefor, by adjusting rods 3ft the markthe described manner of adjustablyconnect- `ing the parts thereof may be used f0rlaymg off, variousl patterns, of -which those noted'finf'the foregoing 4are. examples. WhatfI claim asA my invention is 1. An. instrument of the character described,l comprising a body member, en d members therefor, ineans for pivotally and adj ustablyconnecting said ,members to said .'body,andlfadjustable marking means carried byeacli member and connecting opposite portions thereof., A

,2. Auinstrument of the character described, comprising a body member, e'nd.` members therefor, means for pivotally and adjustably connecting said. members to said body, protractors carried by the end mem? 'bers' for indicating the angular positions of said members `relative to said body, and

marking means adjustably connectingopposite portions of said end members.

3. An instrument of the character described, comprising a body, end members therefor, means for adj'ustably and pivotally connecting said members to said body, mark-A therewith, a- 'stationary clamping sleeve for one end of each end' member, an adjustable clamping sleeve carried by the other .end portion of each end member, and marking means adjustablysupported by said sleeves.

5. A11 instrument of the lcharacter clescribed eoi nprising a body member, end members having an adjustable pivotal ennvnection therewith, a stationary.clamping sleeve at onev end of each end member, an adjustable sleeve carrled by the other, end

.portion 0f`each of said end members, and

a bowed marking wire' for each end member` having its ends adjustably supported by thesaid sleeves.

6. An instrument of the character described comprising a body member haring .a cent-ral longitudinal slot, end members similarly slotted, means for holding said end members in adjustable pivotal engage- .ment wlth said body member, a protractor for'eachend member, fprindicating its angular position relative to the. bodymember. and marking p'ncans carried by each end member. y'

7.'A`pattern' draftingL instrumentconiprisinga body. end members therefor. means for pivotally and adjust-ably connecting said members to said body, and adjustable marking means'carried by and connecting opposite ,portions of said members, and, adapted to lie-rocked .across a' drawing surface tolay out thel ends of a pattern.

S. An instrumentl of the character de- Ascribed comprisinga body, en d members ad-A justably connected thereto, and an ink-reeeiving marking-wire adjustably connectf' ing opposite ends f each enfl.'me1nl')e1'.

9. An -instrumento't the characterl described,` comprising a body. bowedink-re ceiving marking wires for the ends thereof,

and means for adj nstably and pivotally con-.

necting the said wires to said body.'

' In .testimony whereof l hereunto atiix my signature 1n presence of two witnesses.

esoneri n. Cannara.;

Witnesses: F. P. SciutoEnun, Il.. C. Sci-morera. 

